---
description: 🚧 施工中
---

# special identifier

[JS](../../..) ⟩ [grammar](../..) ⟩ [token](..) ⟩ [identifier]() ⟩ special identifiers

{% hint style="success" %}
A few [](<> "mention")s have a <mark style="color:yellow;">**special meaning**</mark> <mark style="color:orange;">**in some contexts**</mark> <mark style="color:red;">**without being**</mark> [reserved](../keyword/reserved "mention") of any kind. They include:

* arguments (<mark style="color:red;">**not**</mark> a keyword, but <mark style="color:red;">**cannot**</mark> be declared as identifier in strict mode)&#x20;
* [async](../../../async/async)&#x20;
* [eval](../../../scope/global/object/eval) (<mark style="color:red;">**not**</mark> a keyword, but <mark style="color:red;">**cannot**</mark> be declared as identifier in strict mode)&#x20;
* get&#x20;
* set
{% endhint %}

{% tabs %}
{% tab title="📘 手冊" %}
* [ ] [Identifier](https://developer.mozilla.org/en-US/docs/Glossary/Identifier) ⟩ [identifiers with special meanings](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar#identifiers_with_special_meanings)
{% endtab %}
{% endtabs %}
